The part you used contains the following works and licences :
// Copyright 2005 Google Inc.
// All Rights Reserved
// Author: Steffen Meschkat <email@example.com>
// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files...
cssQuery, version 2.0.2 (2005-08-19)
Copyright: 2004-2005, Dean Edwards (http://dean.edwards.name/)
1 & 3 are OK (MPL 1.1 and Public Domain without licence specfied)
2. Is less clear (Google licence ?)
4. LGPL 2.1 is incompatible with ASL2
Are all this files comming from Selenium core ?